Benjamin Kramer | 72c0d7f | 2011-09-13 19:42:23 +0000 | [diff] [blame] | 1 | //===-- llvm-dwarfdump.cpp - Debug info dumping utility for llvm -----------===// |
| 2 | // |
| 3 | // The LLVM Compiler Infrastructure |
| 4 | // |
| 5 | // This file is distributed under the University of Illinois Open Source |
| 6 | // License. See LICENSE.TXT for details. |
| 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
| 9 | // |
| 10 | // This program is a utility that works like "dwarfdump". |
| 11 | // |
| 12 | //===----------------------------------------------------------------------===// |
| 13 | |
| 14 | #include "llvm/ADT/OwningPtr.h" |
| 15 | #include "llvm/ADT/Triple.h" |
| 16 | #include "llvm/ADT/STLExtras.h" |
| 17 | #include "llvm/Object/ObjectFile.h" |
| 18 | #include "llvm/DebugInfo/DIContext.h" |
| 19 | #include "llvm/Support/CommandLine.h" |
| 20 | #include "llvm/Support/Debug.h" |
| 21 | #include "llvm/Support/Format.h" |
| 22 | #include "llvm/Support/ManagedStatic.h" |
| 23 | #include "llvm/Support/MemoryBuffer.h" |
| 24 | #include "llvm/Support/MemoryObject.h" |
| 25 | #include "llvm/Support/PrettyStackTrace.h" |
| 26 | #include "llvm/Support/Signals.h" |
| 27 | #include "llvm/Support/raw_ostream.h" |
| 28 | #include "llvm/Support/system_error.h" |
| 29 | #include <algorithm> |
| 30 | #include <cstring> |
| 31 | using namespace llvm; |
| 32 | using namespace object; |
| 33 | |
| 34 | static cl::list<std::string> |
| 35 | InputFilenames(cl::Positional, cl::desc("<input object files>"), |
| 36 | cl::ZeroOrMore); |
| 37 | |
Benjamin Kramer | 6b3ae46 | 2011-09-15 21:17:40 +0000 | [diff] [blame] | 38 | static cl::opt<unsigned long long> |
| 39 | Address("address", cl::init(-1ULL), |
| 40 | cl::desc("Print line information for a given address")); |
| 41 | |
Benjamin Kramer | 72c0d7f | 2011-09-13 19:42:23 +0000 | [diff] [blame] | 42 | static void DumpInput(const StringRef &Filename) { |
| 43 | OwningPtr<MemoryBuffer> Buff; |
| 44 | |
| 45 | if (error_code ec = MemoryBuffer::getFileOrSTDIN(Filename, Buff)) { |
| 46 | errs() << Filename << ": " << ec.message() << "\n"; |
| 47 | return; |
| 48 | } |
| 49 | |
| 50 | OwningPtr<ObjectFile> Obj(ObjectFile::createObjectFile(Buff.take())); |
| 51 | |
Benjamin Kramer | 72c0d7f | 2011-09-13 19:42:23 +0000 | [diff] [blame] | 52 | StringRef DebugInfoSection; |
| 53 | StringRef DebugAbbrevSection; |
| 54 | StringRef DebugLineSection; |
Benjamin Kramer | 358f4fd | 2011-09-14 01:09:52 +0000 | [diff] [blame] | 55 | StringRef DebugArangesSection; |
Benjamin Kramer | 34f864f | 2011-09-15 16:57:13 +0000 | [diff] [blame] | 56 | StringRef DebugStringSection; |
Benjamin Kramer | 72c0d7f | 2011-09-13 19:42:23 +0000 | [diff] [blame] | 57 | |
| 58 | error_code ec; |
Michael J. Spencer | 2099039 | 2011-10-07 19:52:41 +0000 | [diff] [blame] | 59 | for (section_iterator i = Obj->begin_sections(), |
| 60 | e = Obj->end_sections(); |
| 61 | i != e; i.increment(ec)) { |
Benjamin Kramer | 72c0d7f | 2011-09-13 19:42:23 +0000 | [diff] [blame] | 62 | StringRef name; |
| 63 | i->getName(name); |
| 64 | StringRef data; |
| 65 | i->getContents(data); |
Benjamin Kramer | 1c0b24f | 2011-09-14 17:28:13 +0000 | [diff] [blame] | 66 | |
| 67 | if (name.startswith("__DWARF,")) |
| 68 | name = name.substr(8); // Skip "__DWARF," prefix. |
| 69 | name = name.substr(name.find_first_not_of("._")); // Skip . and _ prefixes. |
| 70 | if (name == "debug_info") |
Benjamin Kramer | 72c0d7f | 2011-09-13 19:42:23 +0000 | [diff] [blame] | 71 | DebugInfoSection = data; |
Benjamin Kramer | 1c0b24f | 2011-09-14 17:28:13 +0000 | [diff] [blame] | 72 | else if (name == "debug_abbrev") |
Benjamin Kramer | 72c0d7f | 2011-09-13 19:42:23 +0000 | [diff] [blame] | 73 | DebugAbbrevSection = data; |
Benjamin Kramer | 1c0b24f | 2011-09-14 17:28:13 +0000 | [diff] [blame] | 74 | else if (name == "debug_line") |
Benjamin Kramer | 72c0d7f | 2011-09-13 19:42:23 +0000 | [diff] [blame] | 75 | DebugLineSection = data; |
Benjamin Kramer | 1c0b24f | 2011-09-14 17:28:13 +0000 | [diff] [blame] | 76 | else if (name == "debug_aranges") |
Benjamin Kramer | 358f4fd | 2011-09-14 01:09:52 +0000 | [diff] [blame] | 77 | DebugArangesSection = data; |
Benjamin Kramer | 34f864f | 2011-09-15 16:57:13 +0000 | [diff] [blame] | 78 | else if (name == "debug_str") |
| 79 | DebugStringSection = data; |
Benjamin Kramer | 72c0d7f | 2011-09-13 19:42:23 +0000 | [diff] [blame] | 80 | } |
| 81 | |
| 82 | OwningPtr<DIContext> dictx(DIContext::getDWARFContext(/*FIXME*/true, |
| 83 | DebugInfoSection, |
Benjamin Kramer | 358f4fd | 2011-09-14 01:09:52 +0000 | [diff] [blame] | 84 | DebugAbbrevSection, |
Benjamin Kramer | b848e97 | 2011-09-15 02:12:05 +0000 | [diff] [blame] | 85 | DebugArangesSection, |
Benjamin Kramer | 34f864f | 2011-09-15 16:57:13 +0000 | [diff] [blame] | 86 | DebugLineSection, |
| 87 | DebugStringSection)); |
Benjamin Kramer | 6b3ae46 | 2011-09-15 21:17:40 +0000 | [diff] [blame] | 88 | if (Address == -1ULL) { |
| 89 | outs() << Filename |
| 90 | << ":\tfile format " << Obj->getFileFormatName() << "\n\n"; |
| 91 | // Dump the complete DWARF structure. |
| 92 | dictx->dump(outs()); |
| 93 | } else { |
| 94 | // Print line info for the specified address. |
| 95 | DILineInfo dli = dictx->getLineInfoForAddress(Address); |
| 96 | outs() << (dli.getFileName() ? dli.getFileName() : "<unknown>") << ':' |
| 97 | << dli.getLine() << ':' << dli.getColumn() << '\n'; |
| 98 | } |
Benjamin Kramer | 72c0d7f | 2011-09-13 19:42:23 +0000 | [diff] [blame] | 99 | } |
| 100 | |
| 101 | int main(int argc, char **argv) { |
| 102 | // Print a stack trace if we signal out. |
| 103 | sys::PrintStackTraceOnErrorSignal(); |
| 104 | PrettyStackTraceProgram X(argc, argv); |
| 105 | llvm_shutdown_obj Y; // Call llvm_shutdown() on exit. |
| 106 | |
| 107 | cl::ParseCommandLineOptions(argc, argv, "llvm dwarf dumper\n"); |
| 108 | |
| 109 | // Defaults to a.out if no filenames specified. |
| 110 | if (InputFilenames.size() == 0) |
| 111 | InputFilenames.push_back("a.out"); |
| 112 | |
| 113 | std::for_each(InputFilenames.begin(), InputFilenames.end(), DumpInput); |
| 114 | |
| 115 | return 0; |
| 116 | } |